I've loved these since I was a little kid. Totally wicked but I won't tell if you won't ;)
The raw dough is extremely delish as well :D
Makes about 30 or so medium sized cookies(the recipe says 5 dozen but I'm guessing that's for tiny little cookies that aren't worth it ;P)
This is from an old recipe book which I only have 1 remaining page from.
Heat the oven to 180C/gas mark 5/ 375F.
Sieve the baking powder and bicarbonate of soda together.
Put all the ingredients in a bowl and mix together.
I'd recommend heating in the microwave for 20secs to heat the butter (but NOT melt!) to make the mixing process easier :)
Gather the mixture together and roll into small balls.
Place on a greased baking tray (fairly wide apart as they spread) and flatten with a fork.
Bake in the oven for 7-10 minutes, until slightly golden. (They are very nice when they are on the chewy side.)
And if you are like me, keep them in a tub out of sight to avoid eating them all at once ;P